From 32726d2d5502302ba5753854f5f2f12ba22681c4 Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Wed, 2 Jul 2014 19:42:03 +0200 Subject: ARM: SAMSUNG: Remove legacy clock code Since S5PV210 now has a complete clock driver using Common Clock Framework, there is no reason to keep the old code. Remove it together with the whole legacy Samsung-specific clock framework which no longer has any users. Signed-off-by: Tomasz Figa Signed-off-by: Kukjin Kim --- arch/arm/plat-samsung/clock-clksrc.c | 212 ----------------------------------- 1 file changed, 212 deletions(-) delete mode 100644 arch/arm/plat-samsung/clock-clksrc.c (limited to 'arch/arm/plat-samsung/clock-clksrc.c') diff --git a/arch/arm/plat-samsung/clock-clksrc.c b/arch/arm/plat-samsung/clock-clksrc.c deleted file mode 100644 index 786a4107a157..000000000000 --- a/arch/arm/plat-samsung/clock-clksrc.c +++ /dev/null @@ -1,212 +0,0 @@ -/* linux/arch/arm/plat-samsung/clock-clksrc.c - * - * Copyright 2008 Simtec Electronics - * Ben Dooks - * http://armlinux.simtec.co.uk/ - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -static inline struct clksrc_clk *to_clksrc(struct clk *clk) -{ - return container_of(clk, struct clksrc_clk, clk); -} - -static inline u32 bit_mask(u32 shift, u32 nr_bits) -{ - u32 mask = 0xffffffff >> (32 - nr_bits); - - return mask << shift; -} - -static unsigned long s3c_getrate_clksrc(struct clk *clk) -{ - struct clksrc_clk *sclk = to_clksrc(clk); - unsigned long rate = clk_get_rate(clk->parent); - u32 clkdiv = __raw_readl(sclk->reg_div.reg); - u32 mask = bit_mask(sclk->reg_div.shift, sclk->reg_div.size); - - clkdiv &= mask; - clkdiv >>= sclk->reg_div.shift; - clkdiv++; - - rate /= clkdiv; - return rate; -} - -static int s3c_setrate_clksrc(struct clk *clk, unsigned long rate) -{ - struct clksrc_clk *sclk = to_clksrc(clk); - void __iomem *reg = sclk->reg_div.reg; - unsigned int div; - u32 mask = bit_mask(sclk->reg_div.shift, sclk->reg_div.size); - u32 val; - - rate = clk_round_rate(clk, rate); - div = clk_get_rate(clk->parent) / rate; - if (div > (1 << sclk->reg_div.size)) - return -EINVAL; - - val = __raw_readl(reg); - val &= ~mask; - val |= (div - 1) << sclk->reg_div.shift; - __raw_writel(val, reg); - - return 0; -} - -static int s3c_setparent_clksrc(struct clk *clk, struct clk *parent) -{ - struct clksrc_clk *sclk = to_clksrc(clk); - struct clksrc_sources *srcs = sclk->sources; - u32 clksrc = __raw_readl(sclk->reg_src.reg); - u32 mask = bit_mask(sclk->reg_src.shift, sclk->reg_src.size); - int src_nr = -1; - int ptr; - - for (ptr = 0; ptr < srcs->nr_sources; ptr++) - if (srcs->sources[ptr] == parent) { - src_nr = ptr; - break; - } - - if (src_nr >= 0) { - clk->parent = parent; - - clksrc &= ~mask; - clksrc |= src_nr << sclk->reg_src.shift; - - __raw_writel(clksrc, sclk->reg_src.reg); - return 0; - } - - return -EINVAL; -} - -static unsigned long s3c_roundrate_clksrc(struct clk *clk, - unsigned long rate) -{ - struct clksrc_clk *sclk = to_clksrc(clk); - unsigned long parent_rate = clk_get_rate(clk->parent); - int max_div = 1 << sclk->reg_div.size; - int div; - - if (rate >= parent_rate) - rate = parent_rate; - else { - div = parent_rate / rate; - if (parent_rate % rate) - div++; - - if (div == 0) - div = 1; - if (div > max_div) - div = max_div; - - rate = parent_rate / div; - } - - return rate; -} - -/* Clock initialisation code */ - -void __init_or_cpufreq s3c_set_clksrc(struct clksrc_clk *clk, bool announce) -{ - struct clksrc_sources *srcs = clk->sources; - u32 mask = bit_mask(clk->reg_src.shift, clk->reg_src.size); - u32 clksrc; - - if (!clk->reg_src.reg) { - if (!clk->clk.parent) - printk(KERN_ERR "%s: no parent clock specified\n", - clk->clk.name); - return; - } - - clksrc = __raw_readl(clk->reg_src.reg); - clksrc &= mask; - clksrc >>= clk->reg_src.shift; - - if (clksrc > srcs->nr_sources || !srcs->sources[clksrc]) { - printk(KERN_ERR "%s: bad source %d\n", - clk->clk.name, clksrc); - return; - } - - clk->clk.parent = srcs->sources[clksrc]; - - if (announce) - printk(KERN_INFO "%s: source is %s (%d), rate is %ld\n", - clk->clk.name, clk->clk.parent->name, clksrc, - clk_get_rate(&clk->clk)); -} - -static struct clk_ops clksrc_ops = { - .set_parent = s3c_setparent_clksrc, - .get_rate = s3c_getrate_clksrc, - .set_rate = s3c_setrate_clksrc, - .round_rate = s3c_roundrate_clksrc, -}; - -static struct clk_ops clksrc_ops_nodiv = { - .set_parent = s3c_setparent_clksrc, -}; - -static struct clk_ops clksrc_ops_nosrc = { - .get_rate = s3c_getrate_clksrc, - .set_rate = s3c_setrate_clksrc, - .round_rate = s3c_roundrate_clksrc, -}; - -void __init s3c_register_clksrc(struct clksrc_clk *clksrc, int size) -{ - int ret; - - for (; size > 0; size--, clksrc++) { - if (!clksrc->reg_div.reg && !clksrc->reg_src.reg) - printk(KERN_ERR "%s: clock %s has no registers set\n", - __func__, clksrc->clk.name); - - /* fill in the default functions */ - - if (!clksrc->clk.ops) { - if (!clksrc->reg_div.reg) - clksrc->clk.ops = &clksrc_ops_nodiv; - else if (!clksrc->reg_src.reg) - clksrc->clk.ops = &clksrc_ops_nosrc; - else - clksrc->clk.ops = &clksrc_ops; - } - - /* setup the clocksource, but do not announce it - * as it may be re-set by the setup routines - * called after the rest of the clocks have been - * registered - */ - s3c_set_clksrc(clksrc, false); - - ret = s3c24xx_register_clock(&clksrc->clk); - - if (ret < 0) { - printk(KERN_ERR "%s: failed to register %s (%d)\n", - __func__, clksrc->clk.name, ret); - } - } -} -- cgit v1.2.3